Subject: eggs on cedar tree
Location: north alabama
December 16, 2015 10:00 am
approx 3 inches accross found on limb of small cedar tree. Probably deposited sometime in October.
This Gall is an abnormal growth on a plant, and though many Galls are produced by insects, this Cedar Apple Rust Gall is caused by the fungus Gymnosporangium juniperi-virginianae. According to the University of Minnesota Integrated Pest Management for home apple growers page: “Cedar-apple rust is a fungal disease that spends half of its life cycle infecting apple or crab apple trees, and the other half infecting Eastern Red Cedar (Juniperus virginiana) or other species of juniper (Juniperus sp.). This disease can cause damage to leaves and fruit of very susceptible apple varieties, but is only a minor problem on resistant or partially resistant trees.” According to the Jack Schmidling Productions, Inc. site, your image: ” is the gall that appears on the Cedar tree in late Winter. When this gall gets wet from Spring rains, the jelly masses emerge from the pores to ripen the spores. When the jelly dries, the spores are carried by the wind to apple trees.”